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| 1 | 激光诱导击穿光谱技术对冶金样品中钢及炉渣的同时分析显示文摘本研究的初衷是开发一种不均匀冶金样品中钢和炉渣的快速、同时分析方法,以用于工艺控制。该方法基于激光诱导击穿光谱技术(LIBS)。选择激光诱导击穿光谱技术是因为它既可以分析导电材料又可分析非导电材料,并且相对来说不易受样品形状及表面光洁度的影响。产生的不均匀样品包含大量亚毫米级的渣颗粒,这些颗粒在单次LIBS分析中不能从周围的钢里面分离出来。因此提出了一种方法来对样品表面进行行扫描,扫描以大约0.5mm的分辨率和10 mm的步长来进行。激光的脉冲速率为20 Hz,扫描速度为1 mm/s。炉渣颗粒在行扫描中表现为钢的'污染区',在这个区域中有高浓度的一些元素,如钙、铝及硅。基于单点校准,提出了一种数学模型来逐步评定所得出的数据。首先,辨别出'干净'的钢区域,测定出钢的成分;第二步,测定出扫描总长度范围内的平均成分;最后一步,通过差减法计算出炉渣的成分平均值。这种方法被应用于几个多相取样器采集的样品的分析。发现钢中的碳、硅、锰、磷、硫及铝等元素都可被测定,仅有百分之几的相对标准偏差。而在炉渣中,分析的相对标准偏差会更高,几个重要元素在10%左右。这一方法有望进一步被开发应用于更小的非金属夹杂物的快速分析。 | BENGTSON Arne THOMAS Bjork | 2009 | 冶金分析2009，29，2： | 10 |
| 2 | Natural history of heartburn:A 10-year population-based study显示文摘AIM:To study the natural history and prevalence of heartburn at a 10-year interval,and to study the effect of heartburn on various symptoms and activities.METHODS:A population-based postal study was carried out.Questionnaires were mailed to the same age-and gender-stratified random sample of the Icelandic population(aged 18-75 years) in 1996 and again in 2006.Subjects were classified with heartburn if they reported heartburn in the preceding year and/or week,based on the definition of heartburn.RESULTS:Heartburn in the preceding year was reported in 42.8%(1996) and 44.2%(2006) of subjects,with a strong relationship between those who experienced heartburn in both years.Heartburn in the preceding week was diagnosed in 20.8%.There was a significant relationship between heartburn,dyspepsia and irritable bowel syndrome.Individuals with a body mass index(BMI) below or higher than normal weight were more likely to have heartburn.Heartburn caused by food or beverages was reported very often by 20.0% of subjects.CONCLUSION:Heartburn is a common and chronic condition.Subjects with a BMI below or higher than normal weight are more likely to experience heartburn.Heartburn has a great impact on daily activities,sleep and quality of life. | Linda Bjork Olafsdottir Hallgrimur Gudjonsson Heidur Hrund Jonsdottir Bjarni Thjodleifsson | 2011 | World Journal of Gastroenterology2011，17，5： | 2 |
| 3 | Prediction of mandibular growth rotation显示文摘 | Bjork A | 1969 | Am J Orthod1969，55，6： | 2 |
| 4 | Irritable bowel syndrome: Physicians' awareness and patients' experience显示文摘AIM: To study if and how physicians use the irritable bowel syndrome (IBS) diagnostic criteria and to assess treatment strategies in IBS patients. METHODS: A questionnaire was sent to 191 physicians regarding IBS criteria, diagnostic methods and treatment. Furthermore, 94 patients who were diagnosed with IBS underwent telephone interview. RESULTS: A total of 80/191 (41.9%) physicians responded to the survey. Overall, 13 patients were diag-nosed monthly with IBS by specialists in gastroenterology (SGs) and 2.5 patients by general practitioners (GPs). All the SGs knew of the criteria to diagnose IBS, as did 46/70 (65.7%) GPs. Seventy-nine percent used the patient's history, 38% used a physical examination, and 38% exclusion of other diseases to diagnose IBS. Only 18/80 (22.5%) physicians used specific IBS criteria. Of the patients interviewed, 59/94 (62.8%) knew they had experienced IBS. Two out of five patients knew IBS and had seen a physician because of IBS symptoms. Half of those received a diagnosis of IBS. A total of 13% were satisfied with treatment. IBS affected daily activities in 43% of cases. CONCLUSION: Half of the patients with IBS who consulted a physician received a diagnosis. Awareness and knowledge of diagnostic criteria for IBS differ between SGs and GPs. | Linda Bjork Olafsdottir Hallgrímur Gudjonsson Heidur Hrund Jonsdottir Jon Steinar Jonsson Einar Bjornsson Bjarni Thjodleifsson | 2012 | World Journal of Gastroenterology2012，18，28： | 2 |
| 5 | Monoclonal antibody2superantigen fusion proteins : tumor specific agents for T cell based tumortherapy 显示文摘 | DOHLSTEN M ABRAHMSEN L BJORK P | 1994 | Pro Natl Acad Sc USA1994，91，： | 1 |
| 6 | PRDM16 controls a brown fat/skeletal muscle switch显示文摘 | SEALE P BJORK B YANG W L | 2008 | Nature2008，454，7207： | 1 |
| 7 | Serum prostate specific antigen complexed to a-1 antichy motrypsin as an indicator of prostate cancer 显示文摘 | Chrisrensson A Bjork T Nilsson O | 1993 | J Urol1993，150，： | 1 |
| 8 | Visualization of in vivo olfactory uptake and transfer using fluorescein dextran 显示文摘 | Jansson B Bjork E | 2002 | J Drug Target2002，10，5： | 1 |
| 9 | Framework for Entropy-based Map Evalua- tion 显示文摘 | BJORKE J T | 1996 | Cartography and Geographical Information Sys- tems1996，23，2： | 1 |
| 10 | Mean-variance portfolios optimization with state-dependent risk aversion 显示文摘 | BJORK T MURGOCI A ZHOU X Y | 2014 | Mathematical Finance2014，24，1： | 1 |
| 11 | Global optimization of heat exchanger network synthesis problems with and without the isothermal mixing assumption显示文摘 | Bjork K M WesterIund T | 2002 | Computers & Chemical Engineeringy2002，26，11： | 1 |
| 12 | Bond market structure in the presence of marked point processes显示文摘 | BjOrk T Yuri K Wolfgang R | 1997 | Mathematical Finance1997，7，2： | 1 |
| 13 | Purification of thrombin by affinity chromatography on immobilized hepaxin显示文摘 | NORDENMAN B BJORK I | 1977 | Thromb Res1977，11，： | 1 |
| 14 | Serum prostate specific antigen complexed to al-antichymotrypsin as an indicator of prostate cancer显示文摘 | Nilsson O | 1993 | J Urol1993，150，1： | 1 |
| 15 | Plasma levels of persistent organohalogens and hormone levels in adult male humans 显示文摘 | Hagmar L Bjork J Sjodin A | 2001 | Archives of Environment Health2001，56，2： | 1 |
| 16 | 查看详情显示文摘 | Bjork M T Ohlsson B J Sass T Peersson A I Thelander C Mag-nusson M H Deppert K Wallenberg L R Samuelson L | | 0，，： | 1 |
| 17 | Effects of eutroph-ication on contaminant cycling in marine benthicsystems显示文摘 | GUNNARSSON J BjORK M GILEK M | 2000 | AM-BIO :A Journal of the Human Environment2000，29，4： | 1 |
| 18 | Amphetamine modulates human incentive processing 显示文摘 | Knutson B Bjork J M Fong G W | 2004 | Neuron2004，43，2： | 1 |
| 19 | Long-tern effect of rapid maxillary expansion studied in one patient with the aid of met allic implants and roentgen stereometry显示文摘 | Samas KV Bjork A Rune B | 1992 | Eur J Orthod1992，14，： | 1 |
| 20 | From simplicity to complexity: developing a model of Practical skill Performance in nursing 显示文摘 | Bjork IT Kirkevold M | 2000 | Clinical Nursing2000，9，4： | 1 |
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